<template>

    <el-container class="home-container">
      <!--  头部区域    -->
      <el-header>
        <div>
          <img src="">
          <span> 电商后台管理系统 </span>
        </div>
        <el-button type="info" @click="logout">退出按钮</el-button>
      </el-header>
      <!--  页面主体区域    -->
      <el-container>
        <!--  侧边栏   -->
        <el-aside :width="isCollapse? '64px': '200px'">
          <div class = "toggle-button" @click="toggleCollapse">|||</div>
<!--        侧边栏菜单区域         Aside-->
            <el-menu
              :default-active="activePath"
              class="el-menu-vertical-demo"
              @open="handleOpen"
              @close="handleClose"
              background-color="#333744"
              text-color="#fff"
              active-text-color="#ffd04b"
              :unique-opened="true"
              :collapse="isCollapse"
              :collapse-transition ="false"
              :router="true"

            >
              <!-- 一级菜单  -->
              <el-submenu :index="item.id+''" v-for="item in menulist" :key="item.id" >
                <!--  一级菜单的模板区域  -->
                <template slot="title">
                  <!-- 图标                  -->
                  <i class="el-icon-location"></i>
                  <!-- 文字                 -->
                  <span>{{item.authName}}</span>
                </template>
                <!--  二级菜单 -->
                <el-menu-item :index="'/'+subItem.path+''" v-for ="subItem in item.children" :key="subItem.id" @click ="saveNavState('/'+subItem.path+'')">
                  <!-- 图标                  -->
                  <i class="el-icon-menu"></i>
                  <!-- 文字                 -->
                  <span>{{subItem.authName}}</span>
                </el-menu-item>
              </el-submenu>

              <el-submenu index="2">
                <template slot="title">
                  <i class="el-icon-location"></i>
                  <span>导航二111</span>
                </template>
              </el-submenu>
            </el-menu>

        </el-aside>
        <!--  右侧内容主体    -->
        <el-main>
<!--          Main-->
          <router-view></router-view>
        </el-main>
      </el-container>
    </el-container>
</template>

<script>
    export default {
      name: "Home",
      //组件的私有数据
      data(){
        return {
          //左侧菜单数据
          menulist:[],
          //侧边数据栏
          isCollapse :false,
          //被激活的连接
          activePath:''
        }
      },
      created() {
        this.getMenuList()
        this.activePath = window.sessionStorage.getItem('activePath')
      },
      methods:{
          logout(){
            window.sessionStorage.clear();
            this.$router.push("/Login");
          },
          //获取所有的菜单
          async getMenuList(){
            //解构赋值  并且重命名 res
             const { data : res} = await this.$http.get('menus')
              console.log(res.data)
            if(res.meta.status !== 200){
              return this.$message.error(res.meta.msg)
            }
            this.menulist = res.data
            // console.log(this.menulist)
          },
        /*点击即折叠*/
        toggleCollapse(){
            this.isCollapse = ! this.isCollapse;
        },
        //保存连接的激活状态
        saveNavState(activePath){
          window.sessionStorage.setItem('activePath',activePath)
          this.activePath = activePath
        }
      }

    }
</script>

<style scoped>
  .el-header{
    background-color:#373d41 ;
    display: flex;
    justify-content: space-between;
    padding-left: 0 ;  /*这个标签独有的*/
    align-items: center; /*上下留有间隙*/
    color: #ffffff;
    font-size: 20px;
    /*嵌套*/
    > div{
      display: flex;
      align-items: center;
      span{
        margin-left: 15px;
      }
    }

  }
  .el-aside{
    background-color: #333744;
    /*取消导航的边框线*/
    .el-mene{
      border-rigth : none;
    }
  }
  .el-main{
    background-color: #eaedf1;
  }
  .home-container{
    height: 100%;
  }

  .iconfont{
    margin-right: 10px;
  }
  .toggle-button{
    background-color:#21A0FF;
    font-size:10px;
    line-height: 24px;
    color:#fff;
    text-align:center;
    letter-spacing:0.2em;
    /*字与字之间的间距*/
    cursor:pointer;
    /*鼠标放上去  边成小手*/
  }
</style>
